The apartment is beautiful and well-furnished, and the building and its staff are very nice. Location is great as well.
Tanya was helpful and attentive as a host, though it should be noted that while the check-out time says 1pm on the listing, the desk staff are on lunch break between noon and 1pm (which we didn't find out until the morning we had to leave), so it should be considered more like an 11:50 checkout time.
The amenities were quite nice. The kitchen was stocked with coffee beans, a grinder, an espresso machine, and a french press. Shower was spacious with good water pressure. The bed was comfortable, and there were ample towels, linens, and dishes.
Would recommend for a couple or single traveler looking to stay in the Thonglor area.